The only downside to doing what you want is if you create a lot of Real Tracks. The RT generation in Real Band is way slower than it is in Biab. If you're only doing one or just short snippents like 8 bars or something like that, then RB is great. Otherwise it may be faster to create the RT's in Biab first, then D & D them into RB.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.